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arXiv · 1303.1110

Phase diagram of the isotropic spin-3/2 model on the z=3 Bethe lattice

Stefan Depenbrock·Frank Pollmann
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Abstract

We study an SU(2) symmetric spin-3/2 model on the z=3 Bethe lattice using the infinite Time Evolving Block Decimation (iTEBD) method. This model is shown to exhibit a rich phase diagram. We compute the expectation values of several order parameters which allow us to identify a ferromagnetic, a ferrimagnetic, a anti-ferromagnetic as well as a dimerized phase. We calculate the entanglement spectra from which we conclude the existence of a symmetry protected topological phase that is characterized by S=1/2 edge spins. Details of the iTEBD algorithm used for the simulations are included.

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Stefan Depenbrock, Frank Pollmann. 2013-03-05. Phase diagram of the isotropic spin-3/2 model on the z=3 Bethe lattice. https://doi.org/10.1103/physrevb.88.035138

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